Riello GS20 - Fixing the electrical wiring; Combustion head setting; Air damper setting

2754
6
GB
3.5 FIXING THE ELECTRICAL WIRING
All the electrical wires, which are to be connected to the terminal board (7, fig. 1, page 1) should pass through
the cable grommet (4, fig. 1). All the electrical wires, which are to be connected into the terminal board must be
gripped in the cable clamps (3, fig. 1). This is molded on both sides to allow the use of various diameter cables.
4. WORKING
4.1 COMBUSTION HEAD SETTING
Loose the screw (A), move the elbow (B) so that the rear plate
of the coupling (C) coincides with the set point.
Tighten the screw (A).
Example:
The burner is installed on a 155 kW boiler with an efficiency of
90%, the burner input is about 172 kW using the diagram, the
combustion set point is 3.
The diagram is to be used only for initial settings, to improve air pressure switch operation or improve combus-
tion, it may be necessary to reduce this setting (set point toward position 0)
4.2 AIR DAMPER SETTING (See fig. 2)
The regulation of the air-rate is made by adjusting the air damper (1), after loosing the screws (2).
When the optimal regulation is reached, screw tight the screws (2).
Cable clamps
A
CB
A CB
A = ø 8 B = ø 11
C = ø 16
D5052
S7015
C
A
B
1
D5231
2
2
Fig. 2
kcal/h kW
Set point
0 21 3 4
240
140
120
100
80
160
200,000
140,000
120,000
100,000
70,000
D5109
5
180
200
220
80,000
160,000
180,000
172